Definition of overran:
(v) :
(transitive) To defeat an enemy and invade in great numbers, seizing the enemy positions conclusively.
(v) :
(transitive) To infest, swarm over, flow over.
(v) :
(transitive) To run past; to run beyond.
(v) :
(intransitive) To continue for too long.
(v) :
(transitive) To go beyond; to extend in part beyond.
(v) :
(transitive) To abuse or oppress, as if by treading upon.